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Field Trips

Field Trip 1Keys to Successful Designs: Gathering of Pertinent Information and Field Inspections
8:15 am – 4:00 pm

This tour will combine classroom discussion and a field visit. The classroom portion will focus on design and soil considerations which are most important to collect and describe, followed by a discussion on the specific design issues at the Tashjian Bee and Pollinator Discovery Center. The field visit will include soil pit observation and description, followed by inspection and review of system components.
8:15 am – Depart Hotel

9:00 AM – Arrive at Tashjian Bee and Pollinator Discovery Center, UM Landscape Arboretum, Chanhassen, MN

AM Classroom Discussion

9:00-10:00 AM: Focus on field-collected design parameters
Dave Gustafson will present an overview of important design parameters that can and should be collected during the site and soil investigation. Reporting and application of this information to septic system design will also be discussed.

10:00-11:00 AM: Importance of soil/site descriptions
Dan Wheeler will present an overview of the critical soil and site conditions to understand and describe during a field visit. Reporting and interpretation of these properties will also be discussed.

11:00 AM- Noon: Site-specific design concerns and solutions
Shane Steinbrecher, Dave Gustafson, Dan Wheeler will present an overview of the site-specific conditions of the Tashjian Bee and Pollinator Discover Center. We will also discuss the decision-making process for determining solutions to these concerns.

Noon-1:00 PM: Lunch (provided)

PM Field Experience

1:00-2:00 PM: Soil pit observation and description
Dan Wheeler, Stacey Feser, Brandon Montgomery will lead the group through a standard soil pit observation and description. Special attention will be given to the soil properties important for proper treatment and acceptance of septic tank effluent.

2:00-3:30 PM: Existing septic system design review and solutions – field inspection
All presenters will review and inspect the various system components (septic tanks, lift station, pretreatment and soil treatment area). Discussion on installation, monitoring, maintenance, etc. will occur.

3:30PM-4:00 PM Travel back to Conference Hotel

Field Trip 2
Large/Community Onsite Systems Tours 
8:00 am – 3:10 pm

This tour will showcase facilities that demonstrate the role of onsite wastewater technologies in serving a larger community and a regional utility wastewater management system.

8:00 am – Depart Hotel

8:45 am – 9:45 am – Arrive Afton, MN – The City of Afton Large Subsurface Sewage Treatment System (LSTS) provides sanitary service to Afton’s “Old Village” along the St. Croix River in Washington County. The LSTS, designed to treat 50,550 gallons per day (gpd) of wastewater, is the largest soil-based subsurface treatment system in Minnesota. As the ultimate treated effluent is dispersed to the native soil, stringent limits are in-place to ensure the protection of the environment and public heath prior to groundwater recharge. Specifically, the MN state permit includes a 10 mg/L total nitrogen limit at the end-of-pipe prior to soil dispersal. To achieve this level of treatment, the LSTS includes primary, secondary, and tertiary wastewater treatment processes.  The tour will allow participants to view these treatment components in operation and allow for discussion.

9:45 am – 10:45 am – Travel to next site

10:35 am – 12:45 pm - Wieser Concrete Plant Tour - To showcase a precast concrete manufacturing facility that produces various products for wastewater management and treatment. The plant features a total building area of 101,000 square feet, 12 overhead cranes (3 ton to 25 ton capacities), 16 boom/crane trucks (11,000 to 40,000 pound capacities), and more.
Lunch - Provided by Wieser Concrete

12:45 pm – 1:25 pm – Travel to next site

1:25 pm – 2:25 pm - St. Croix Bluffs Regional Park, MN – Washington County operates a seasonal campground in the south part of the county with one of the more complex septic systems in the county. The installation of the system itself was interesting. The biggest hurdle on this site was the sandstone and limestone below the soil. Large jackhammers and excavators were needed to get the tank holes and force mains deep enough to install. A six way automatic distributing valve was utilized to dose 6 separate drain field areas. These drain fields were installed using chambers. This eliminated the need to haul in aggregate and allowed more workers to remain onsite and keep the install moving. The tour will go over considerations during the design phase, the complexity of the installation, and operational issues encountered during the life of this system.

2:25 pm – 3:10 pm - Travel back to Conference Hotel



Field Trip 3
Water Reuse Systems Tour  (1/2 day tour, lunch not provided)
8:00 am – 12:00 pm
This tour will showcase facilities reusing wastewater and stormwater within the Twin Cities metropolitan region
8:00 am – Depart Hotel

8:30 am – 10:00 am – Shakopee Mdewakanton Sioux Community (SMSC) Stormwater harvesting and wastewater reuse irrigation systems .  The SMSC public works/natural resources staff and the design engineer will be present at the two sites (commercial and residential) to discuss operation of their system.

10:00 am – 10:30 am – Travel to next site

10:30 am -11:30 am - University of Minnesota student dorm, Minneapolis Campus reuse of stormwater The 17th Avenue Residence Hall on the University of Minnesota Twin Cities Campus is a 600-bed dormitory with 70 bathrooms. Constructed in 2013, the building sits on a 1.1-acre site that is nearly 100% impervious. In order to manage the stormwater run-off from the roof and walkways, a rainwater harvest system was constructed. The main feature of the system is a 35,000-gallon cistern that holds water before treating it, ultimately delivering it to the building's toilets. For the 2017-2018 academic year, 265,000 gallons of stormwater was used for flushing toilets.  A representative of the University will be onsite to explain operation and maintenance of the system.  In addition, a representative of the University will discuss a future stormwater reuse project that is in the process of being designed and built at the football stadium. 

11:30 am – 12:00 noon – Travel back to Conference Hotel